The Surface Pro runs a full version of Windows 8. The Surface available now runs Windows RT, which lacks many of the features in Windows 8.

The Surface Pro comes with 64GB storage ($899) and 128GB storage ($999). The other Surface ships with 32GB ($499) and 64GB ($599).

The Surface Pro comes equipped with an Intel Core i5 processor. The other Surface uses an ARM-based chip that isn’t as impressive.

So, are all of these features worth an extra $400? No.

For less money you could purchase Dell’s XPS Ultrabook, which comes with a 128GB solid state drive (SSD). It has a full keyboard and uses the same Intel Core i5 processor. It also has a larger screen (13.3″).

Or, you could go with the Samsung Touchscreen Ultrabook, which ships with a standard hard drive and a solid state drive.